<script setup>
import {
  Edit,
  Delete
} from '@element-plus/icons-vue'
import '@vueup/vue-quill/dist/vue-quill.snow.css';

import { ref } from 'vue'

//文章分类数据模型
const categorys = ref()

//用户搜索时选中的分类id
const categoryId=ref('')


//用户搜索时选中的发布状态
const state=ref('')

//文章列表数据模型
const articles = ref()

//分页条数据模型
const pageNum = ref(1)//当前页
const total = ref(20)//总条数
const pageSize = ref(5)//每页条数

//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
  pageSize.value = size
  articleList()
}
//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
  pageNum.value = num
  articleList()
}

//获取文章分类列表
import {articleCategoryListService} from '@/api/article.js'
const getCategoryList = async () => {
  let result = await articleCategoryListService()
  categorys.value = result.data
}

//获取文章列表
import {articleListService} from '@/api/article.js'
import {userInfoById} from "@/api/user.js"
const articleList = async () => {
  let params = {
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    categoryId: categoryId.value ? categoryId.value : null,
    state: state.value ? state.value : null
  }
  let result = await articleListService(params);

  //渲染视图
  total.value = result.data.total;
  articles.value = result.data.items;
  //处理数据,给数据模型扩展一个属性categoryName,分类名称
  for (let i = 0; i < articles.value.length; i++) {
    let article = articles.value[i];
    let createUserId = article.createUser;
    let userInfoId = await userInfoById(createUserId)
    article.articleUser = userInfoId.data.username
    for (let j = 0; j < categorys.value.length; j++) {
      if (article.categoryId === categorys.value[j].id) {
        article.categoryName = categorys.value[j].categoryName;
      }
    }
  }
}

//添加文章
import {articleAddService} from '@/api/article.js'
import {ElMessage} from 'element-plus'
const addArticle = async (clickState)=>{
  //把发布状态赋值给数据模型
  articleModel.value.state = clickState;
  //调用接口
  let result = await articleAddService(articleModel.value);
  ElMessage.success(result.msg? result.msg:'添加成功');
  //让抽屉消失
  visibleDrawer.value = false;
  //刷新当前列表
  await articleList()
}

//更改文章
import {articleUpdateService} from "@/api/article.js";

const updateArticle = async (clickState)=>{
  articleModel.value.state = clickState;
  console.log(articleModel.value);
  let result = await articleUpdateService(articleModel.value);
  ElMessage.success(result.msg? result.msg:'修改成功');
  //让抽屉消失
  visibleDrawer.value = false;
  //刷新当前列表
  await articleList()
}

//删除文章
import {ElMessageBox} from 'element-plus'
import {articleDeleteService} from "@/api/article.js";
const deleteCategory = async (row) => {
  //提示用户 确认框
  ElMessageBox.confirm(
      '你确认要删除该文章吗?',
      '温馨提示',
      {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning',
      }
  )
      .then(async () => {
        //调用接口
        let result = await articleDeleteService(row.id);
        ElMessage({
          type: 'success',
          message: '删除成功',
        })
        //刷新列表
        await articleList();
      })
      .catch(() => {
        ElMessage({
          type: 'info',
          message: '用户取消了删除',
        })
      })
}
//调用函数
getCategoryList() //获取文章分类列表
articleList() //获取文章列表

import {Plus} from '@element-plus/icons-vue'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
//控制抽屉是否显示
const visibleDrawer = ref()
//定义抽屉标题显示
const title = ref('')

//展示抽屉
const showDialog = (row) => {
  visibleDrawer.value = true;
  title.value = '编辑文章';
  articleModel.value.title = row.title;
  articleModel.value.categoryId = row.categoryId;
  articleModel.value.coverImg = row.coverImg;
  articleModel.value.content = row.content;
  articleModel.value.state = row.state;
  articleModel.value.id = row.id;
}

//添加表单数据模型
const articleModel = ref({
  title: '',
  categoryId: '',
  createUser:'',
  coverImg: '',
  content:'',
  state:''
})

//导入token
import {useTokenStore} from "@/stores/token.js";
const tokenStore = useTokenStore()

//上传图片成功地回调函数
const uploadSuccess = (result)=>{
  articleModel.value.coverImg = result.data;
  console.log(result.data);
}



//清空模型的数据
const clearData = () => {
  articleModel.value.title = '';
  articleModel.value.categoryId = '';
  articleModel.value.coverImg = '';
  articleModel.value.content = '';
  articleModel.value.state = '';
};


</script>
<template>
  <el-card class="page-container">
    <template #header>
      <div class="header">
        <span>文章管理</span>
        <div class="extra">
          <el-button type="primary" @click="visibleDrawer=true;title='添加文章';clearData()">添加文章</el-button>
        </div>
      </div>
    </template>
    <!-- 搜索表单 -->
    <el-form inline>
      <el-form-item label="文章分类：">
        <el-select placeholder="请选择" v-model="categoryId" style="width: 100px">
          <el-option
              v-for="c in categorys"
              :key="c.id"
              :label="c.categoryName"
              :value="c.id">
          </el-option>
        </el-select>
      </el-form-item>
      <el-form-item label="发布状态：">
        <el-select placeholder="请选择" v-model="state" style="width: 100px">
          <el-option label="已发布" value="已发布"></el-option>
          <el-option label="草稿" value="草稿"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="articleList">搜索</el-button>
        <el-button @click="categoryId = ''; state = '';articleList()">重置</el-button>
      </el-form-item>
    </el-form>
    <!-- 文章列表 -->
    <el-table :data="articles" style="width: 100%">
      <el-table-column label="文章标题" prop="title" width="200"></el-table-column>
      <el-table-column label="作者" prop="articleUser" ></el-table-column>
      <el-table-column label="分类" prop="categoryName" ></el-table-column>
      <el-table-column label="发表时间" prop="createTime" width="200"> </el-table-column>
      <el-table-column label="文章状态" prop="state" align="center">
        <template #default="scope">
          <el-tag v-if="scope.row.state === '已发布'" type="success">{{ scope.row.state }}</el-tag>
          <el-tag v-else-if="scope.row.state === '草稿'" type="info">{{ scope.row.state }}</el-tag>
          <el-tag v-else type="danger">{{ scope.row.state }}</el-tag>
        </template>
      </el-table-column>
      <el-table-column label="操作" align="center">
        <template #default="{ row }">
          <el-button :icon="Edit" circle plain type="primary" @click="showDialog(row)"></el-button>
          <el-button :icon="Delete" circle plain type="danger" @click="deleteCategory(row)"></el-button>
        </template>
      </el-table-column>
      <template #empty>
        <el-empty description="没有数据" />
      </template>
    </el-table>
    <!-- 分页条 -->
    <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5 ,10, 15]"
                   layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
                   @current-change="onCurrentChange" style="margin-top: 20px; justify-content: flex-end" />
    <!-- 抽屉 -->
    <el-drawer v-model="visibleDrawer" :title="title" direction="rtl" size="50%">
      <!-- 添加文章表单 -->
      <el-form :model="articleModel" label-width="100px" >
        <el-form-item label="文章标题" >
          <el-input v-model="articleModel.title" placeholder="请输入标题"></el-input>
        </el-form-item>
        <el-form-item label="文章分类">
          <el-select placeholder="请选择" v-model="articleModel.categoryId">
            <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="文章封面">
          <!--
              auto-upload:设置是否自动上传
              action:设置服务器接口路径
              name:设置上传的文件字段名
              headers:设置上传的请求头
              on-success:设置上传成功的回调函数
           -->
          <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false" action="/api/image/upload" name="file" :headers="{'Authorization': tokenStore.token}" :on-success="uploadSuccess">
            <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
            <el-icon v-else class="avatar-uploader-icon">
              <Plus />
            </el-icon>
          </el-upload>
        </el-form-item>
        <el-form-item label="文章内容">
          <div class="editor">
            <el-input
                type="textarea"
                :rows="10"
                v-model="articleModel.content"
                placeholder="请输入文章内容">
            </el-input>
          </div>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="title==='添加文章' ? addArticle('已发布'):updateArticle('已发布')">发布</el-button>
          <el-button type="info" @click="title==='添加文章' ? addArticle('草稿'):updateArticle('草稿')">草稿</el-button>
        </el-form-item>
      </el-form>
    </el-drawer>
  </el-card>
</template>
<style lang="scss" scoped>
.page-container {
  min-height: 100%;
  box-sizing: border-box;

  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
}

/* 抽屉样式 */
.avatar-uploader {
  :deep() {
    .avatar {
      width: 178px;
      height: 178px;
      display: block;
    }

    .el-upload {
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      cursor: pointer;
      position: relative;
      overflow: hidden;
      transition: var(--el-transition-duration-fast);
    }

    .el-upload:hover {
      border-color: var(--el-color-primary);
    }

    .el-icon.avatar-uploader-icon {
      font-size: 28px;
      color: #8c939d;
      width: 178px;
      height: 178px;
      text-align: center;
    }
  }
}
.editor {
  width: 100%;
  :deep(.ql-editor) {
    min-height: 200px;
  }
}
</style>